Comparison

Readwise vs Tendrite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Readwise

This app helps you retain more of what you read by centralizing and revisiting your highlights from various reading platforms. It uses spaced repetition and active recall techniques to improve memory and offers features like tagging, note-taking, and OCR for physical books.

Highlights
  • Synchronize highlights from multiple platforms
  • Daily review habit via app and email
  • Spaced repetition and active recall
  • Tag, note, and search highlights
  • OCR for paper book highlights
  • Convert highlights to flashcards
Features
Read full description

Readwise helps you get the most out of what you read by making it fun & easy to revisit your highlights from all your favorite reading platforms in one place. Quickly synchronize your highlights from Kindle, Apple Books, Instapaper, Pocket, Medium, Goodreads, and even paper books. Then start building a daily review habit using the app and daily email. By reviewing your highlights every day, you'll retain dramatically more and you'll finally stop forgetting all the details from books you just finished! --- “Readwise is my favorite new service this year. Save highlights from Kindle, Instapaper, and now tweets... one of the best long-term personal learning tools I’ve come across.” — Caleb Hicks “Besides my Kindle, Readwise has been the most influential tech for improving my reading process.” — Blake Reichmann “If you use Kindle or Instapaper or just enjoy keeping and reading highlights, please sign up to Readwise. It will become one of your cherished services.” — Christopher Galtenberg --- ACTUALLY USE YOUR HIGHLIGHTS Highlighting is great, but why bother if you're never going to see any of your highlights again? Readwise makes it easy to quickly liberate all your highlights into one place, ensuring that you'll actually see and use them, including highlights from: • Amazon Kindle • Apple iBooks • Instapaper • Pocket • Medium • Goodreads • Twitter • Physical Books (using OCR) • Manual Input • CSV Upload STOP FORGETTING WHAT YOU READ How often do you finish a book, only to forget the key ideas two weeks later? We don't remember things by just reading them once. Readwise solves this problem using scientifically proven learning techniques called Spaced Repetition and Active Recall. Readwise resurfaces the right highlights at the right times using a daily email and an app. Readwise even makes it possible to convert your best highlights into flashcards for added retention. TAG, NOTE, SEARCH, AND ORGANIZE With your highlights all in one place, Readwise enables you to organize and connect these ideas in new ways. Use search to find a highlight instantly; use tag to organize highlights within your library; use notes to add your own annotations. HIGHLIGHT PAPER BOOKS Readwise also makes it possible to take highlights from your physical books and papers using your phone’s camera. Just snap a pic, highlight with your finger, and have your favorite highlights saved forever. --- If you are not already a Readwise subscriber, you can get started immediately with a 30-day free trial with no credit card upfront. At the end of the trial, you will not be charged unless you choose to subscribe to Readwise Full or Readwise Lite. Price may vary by location. Manage your subscription from your dashboard. --- Support: Check out readwise.io/faq or email us at hello@readwise.io Privacy Policy: https://readwise.io/tos Terms of Service: https://readwise.io/privacy

About

Tendrite

This app transforms dense scientific papers into easily digestible knowledge cards. It uses AI to extract key insights, offering simplified explanations, analogies, and sources. Organize research into reading paths and discover new topics with personalized recommendations.

Highlights
  • AI-powered knowledge cards
  • Simplified explanations
  • Real-world analogies and sources
  • Organized reading paths
  • Personalized paper recommendations
  • Technical glossary
  • Multiple input methods
Features
Read full description

Tendrite transforms dense scientific papers into digestible knowledge cards that take less than 30 seconds to read. Whether you're a researcher, student, or curious mind, Tendrite makes cutting-edge science accessible. HOW IT WORKS Add any scientific paper by pasting a PDF link, uploading a file, entering a topic, or pasting text. Our AI reads the paper and extracts the key insights into swipeable knowledge cards covering hypotheses, methods, results, data, conclusions, and limitations. KEY FEATURES - Snackable Knowledge Cards: Swipe through bite-sized insights extracted from research papers - AI-Powered Simplification: Tap "Simplify" on any card to get an explanation a 12-year-old could understand - Analogies & Sources: Get real-world analogies and direct source quotes for deeper understanding - Reading Branches: Organize related papers into reading paths that build on each other - Daily Pulse: Get personalized paper recommendations based on your reading history - Learn Any Topic: Enter a topic like "Quantum Mechanics" and get a comprehensive learning module with real-world context - Technical Glossary: Tap any highlighted term for an instant AI-powered explanation - Multiple Input Methods: PDF links, file uploads, pasted text, or topic search PERFECT FOR - Researchers staying current with literature - Students studying complex topics - Science enthusiasts exploring new fields - Professionals needing quick research summaries - Anyone curious about the latest scientific discoveries Tendrite uses advanced AI to faithfully extract and present scientific content while maintaining accuracy and proper attribution. All original PDFs are preserved for reference. SUBSCRIPTION INFORMATION Tendrite Pro unlocks unlimited AI-powered knowledge card generation. - Monthly: $7.99/month - Yearly: $79.99/year (save 17%) Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. You can manage and cancel subscriptions in your App Store account settings. Terms of Use: https://tendrite-b005d.web.app/terms.html Privacy Policy: https://tendrite-b005d.web.app/privacy.html

Screenshots

Readwise4 screens
Tendrite4 screens

Verdict

The call

The clearest difference is ratings volume: Readwise at 1.5K against Tendrite's 1. Readwise also leads on iOS requirement (15.5 vs 26.0). Tendrite's advantage is rating (5.0 vs 4.8). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Readwise sells 8 in-app purchases, starting at $4.99 per month and Tendrite sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Tendrite holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Readwise has 1.5K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 12, 2026 and September 19, 2026 respectively.

Scorecard3 real differences · 7 level
Readwise versus Tendrite: the parameters behind the verdict, then further details
ParameterReadwiseTendrite
PriceFreeFree
Rating4.8 (1.5K ratings)5.0 (1 ratings) — better
Positive reviews72.3% of reviews—
Number of ratings1.5K — better1
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better26.0
Further details — not scored
Size110 MB37 MB
Age rating12+17+
DeveloperReadwise, IncRAW PLUS DRY LLC

Customer experience

Readwise

All ratings1,513 ratings
Positive95.7%
Neutral1.5%
Negative2.8%
Written reviews325 reviews
Positive72.3%
Neutral7.7%
Negative20.0%

Tendrite

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Readwise

Reported bugs

3 issues
  • Frequent app crashes
  • Sync failures with certain accounts
  • Unreliable highlight capture

Requested features

5 requests
  • Add support for more reading apps
  • Improve sync and import capabilities
  • Introduce more customization options
  • Enhance search and organization tools
  • Develop a more intuitive mobile interface

Tendrite

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Readwise

Subscriptions8
  • Readwise Lite Monthly$4.991 Month
  • Readwise Lite Monthly$6.991 Month
  • Readwise Full Monthly Plan$8.991 Month
Show 5 more
  • Readwise Full Monthly$12.991 Month
  • Readwise Lite Yearly$52.991 Year
  • Readwise Lite Yearly$66.991 Year
  • Readwise Full Yearly$94.991 Year
  • Readwise Full Yearly$119.991 Year
2 purchases

Tendrite

Subscriptions2
  • Tendrite Pro Monthly$7.991 Month
  • Tendrite Pro Yearly$79.991 Year

Questions

Is Readwise free?
Readwise is free to download, with in-app purchases available.
Is Tendrite free?
Tendrite is free to download, with in-app purchases available.
Which has better reviews, Readwise or Tendrite?
Tendrite is rated higher. Readwise averages 4.8 out of 5 from 1.5K ratings, while Tendrite averages 5.0 from 1 ratings.
Do Readwise or Tendrite have ads?
Neither Readwise nor Tendrite shows ads.
Which is updated more often, Readwise or Tendrite?
Readwise ships an update every 2 weeks, and Tendrite every 2 weeks. Most recently, Readwise was updated on October 12, 2026 and Tendrite on September 19, 2026.

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